+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+/* written by Jim Meyering */
+
+#include <config.h>
+
+/* Specification. */
+#include "xgethostname.h"
+
+#include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include "xalloc.h"
+
+#ifndef INITIAL_HOSTNAME_LENGTH
+# define INITIAL_HOSTNAME_LENGTH 34
+#endif
+
+/* Return the current hostname in malloc'd storage.
+ If malloc fails, exit.
+ Upon any other failure, return NULL and set errno. */